building an OS (all streams)

Currently Playing: building my own OS in c++ (week 130, kernel integration tests)

tldr: I want to hear your systems programming challenges. DM me =) [contact below] #livecoding #operatingsystem #coding hey everyone - I’m trying to learn how I can be more helpful to this community beyond just streams. I’d like to talk to some people about their challenges in the world of systems programming, whether they're technical, career, or anything else. If you’re interested, just DM me. thank you 🙏 contact: Discord (mm64k) Instagram (offlinemark) Email (mark @ offlinemark.com) -- welcome: https://offlinemark.com/welcome discord: https://discord.gg/P6zQBsD2ng Welcome! I’m an aspiring systems programmer. Professionally, I used to work in infosec, but now I work on music production software & hardware. I stream OS/kernel development every week for 2 hours. (I’ve done this for over 75 weeks in a row! Sundays 10a-12 ET) From February 2024 to May 2025, I streamed myself doing all the labs for MIT’s old Operating Systems Engineering course (6.828 (2018)). Through doing this, I became very familiar with JOS, which is the x86 OS used for the course. I had almost no experience with OS development when I started, although I did have much experience with programming and low level concepts. I did the coursework because I wanted to write my own OS, but felt I wasn’t ready. Now, from May 2025 to present, I’m pursuing my own learning agenda with OS development, and starting my on own OS. If this resonates with you, please subscribe and I'll see you in a stream :) 00:00:00 Start 00:01:25 Recap of last week's integration test framework progress 00:04:50 Explanation of integration tests vs unit tests with real kernel examples 00:09:41 Design decisions for how tests pass or fail using serial console output 00:26:50 Planning today's goals: registering tests and defining pass/fail mechanisms 00:35:24 Refactoring the codebase to create a dedicated integration tests file 00:43:34 Setting up and running the kernel with the guard page write test 00:57:53 First successful integration test run demonstrating pass/fail detection 01:59:29 Identifying the need for fine-grained test flags to avoid false positives 02:10:34 Demonstrating complete test pass/fail cycle with intentional bug injection